Insert meals into database including similar requests

[Th3JD]

During meal parsing, the mealID of the meal should be fetched from the database. If a long alias matches, the id is found. If not, the short aliases are checked. If no short alias matches, the meal is definitely new and should be added. If one or more short aliases match, the admins need to decide, whether the meal is new or an alias of an existing one.

• [x] Database request and insert
• [x] Requesting information from admins

[Th3JD]

The admins should be in one Group with the bot, having only access to a third type of Actions: AdminActions